Toyota 90311-92006 Engine Rear Oil Seal

The crankshaft should be installed first, followed by bolting the bearing caps in place, after which a new Crankshaft Seal can be installed in the retainer and secured to the block. It is essential to inspect the crankshaft's seal contact surface for any scratches or nicks that could compromise the new Crankshaft Seal and lead to oil leaks; if damage is found, a replacement crankshaft is necessary. The old seal can be removed from the retainer by driving it out from the back with a hammer and punch, ensuring to support the retainer on wood blocks and noting the depth of the old Crankshaft Seal for proper installation of the new one, while avoiding damage to the bore. The retainer should be cleaned, and a thin coat of engine oil applied to the outer edge of the new Crankshaft Seal, which must be pressed squarely into the bore; if a press is unavailable, using two smooth pieces of wood and a large vise can help achieve even pressure. Tapping the Crankshaft Seal into the retainer with a hammer is a last resort, ensuring to use a block of wood for even force distribution. Before attaching the Crankshaft Seal/retainer to the crankshaft and block, the seal lips should be lubricated with clean engine oil or moly-based grease. For four-cylinder engines, a new gasket and sealant are required, with dowel pins in place, while V6 engines do not need a gasket but require a 2 mm wide bead of RTV sealant on the retainer-to-block surface. Finally, the bolts should be tightened gradually to the specified torque.